Railway vehicle underframe



May 3, 1932. E. c. JACKSON RAILWAY VEHICLE UNDERF'RAME Filed June 27,1930 !f .rllllfllllllll I ni Patented May 3, 1932 UNITED STATES PATENTOFFICE EDWIN C. JACKSON,

0]! ST. LOUIS, MISSOURI, ASSIGNOR T0 GENERAL STEEL CASTINGS RAILWAYVEHICLE UNDERFRAME Application filed June 27,

My invention relates to railway rolling stock and consists in a novelunderframe structure particularly adapted for tank vehicles, althoughsome features of the invention may be embodied in structures which arenot used for tank purposes.

The main and general object of my inventionis to provide a simple,rigid, economical underframe, preferably forming the bottom of thevehicle tank and including, as an integral part, one or more reservoirsfor fluids to be held separate from the fluid in the main. tank of thevehicle.' As an illustrative example, the tank vehicle may form alocomotive tender and may contain reservoirs separate from the watertank compartment for compressed air or for fuel oil or gas, or otherfluids.

Preferably, the separate reservoirs will -merge with the tank-formingportion of the underframe and will constitute, in part, sill members forthe underframe and, in the selected embodiment of my invention shown inthe accompanying drawings, the structure is in the form of a casting,although it is within the scope of my invention to form two or moreparts separately and then unite them by welding into an integral whole,which will possess many of the desirable features attending a one-piececasting. In the drawings- Figure frame.

Figures 2 and 3 sections taken on the lines 2-2 Figure 1.

Figures 4:, 5 and 6 are vertical transverse sections taken on thecorresponding section lines of Figure 1.

The underframe is of a general rectangular shape, having a substantiallyhorizontal bottom web 1 extending from side to side of the underframeand provided with upstanding longitudinal sill elements 2, 3 and 4 andwith transverse end sills 5, bolsters 6 and intermediate reinforcingribs or transoms 7 This web forms the bottom of the vehicle tank and thesuperstructure side sheets 8 and end sheets (not shown) may be securedto the side sills 2 by riveting or welding, or

1 is a top view of a tender underare vertical longitudinal and 3-3 of1930. Serial No. 464,295.

both. The intermediate portion 9 of the bottom web is depressed toprovide increased capacity of the tank structure and to lower the centerof gravity.

Formed integrally with the web 1 and with sills 4 are cylindricalreservoir members 10, 11 and 12 disposed longitudinally of theunderframe with their walls merging with the web 1 and sills 4 or, inother words, with In my preferred structure, I show a series I of threereservoirs arranged abreast of each other, reservoir 10 being locatedintermediate the spaced sills 4 and reservoirs 11 and 12 being locatedon the outside of the latter and between the same and the side sills 2.I also show a fourth reservoir 15 located intermediate the left handbolster and the corresponding end of the underframe and between thecenter sills, there being no additional reservoirs on the outside of thesills.

Obviously, one or more reservoirs could be provided at other points onthe underframe Web without departing from the spirit of my inventionand, if desired, the reservoirs could extend transversely of theunderframe instead of longitudinally thereof but I prefer thelongitudinal arrangement as thereby the reservoir walls can be utilizedto transmit a portion of the longitudinal forces applied to theunderframe.

Another feature of my. invention is the provision of a brake cylinderstructure formed integrally with the bottom web 1. This structureincludes the brake cylinder body 16 and, preferably, one of the brakecylinder heads. Figure 3 shows the non-pressure head 17 formedintegrally with the web 1 and shows the latter elevated, as indicated at18, to form a recess for accommodating the brake riggin applied to thepressure head of the cylin er. Pressure head 19 will be formedseparately and secured to the cylinder in any approved manner.

The described structure provides a rigid underframe with reservoirs forair or other purposes, and a brake cylinder, integrally united and freefrom bolts and rivets which require frequent inspection and tighteningin order to maintain dition. By locating the reservoirs above the bottomweb of the tank, the latter may be located at a lower level thanotherwise possible without projecting beyond the clearance limits whichmust be observed. Merging of the reservoir walls with the sills andbottom web affords increased strength for each of these elements andalso affords economy of material over a structure in which completereservoirs would be formed separately and then attached to theunderframe.

I claim:

1. A railway tank vehicle underframe hav ing a portion forming part ofthe wall of the vehicle tank and also forming a part of the wall of afluid chamber or reservoir separate from the vehicle tank.

2. In a railway vehicle underframe, a web member extending generally ina horizontal direction and forming the bottom of a tank structure, and aseparate fluid chamber integral with said web member and projectingupwardly therefrom.

3. In a railway vehicle underframe, a web member extending generally ina horizontal direction and forming the bottomof a tank structure, and aseparate fluid chamber integral with said web member and projectingupwardly therefrom, a portion of said web forming a part of the wall ofsaid chamber.

4. A railway vehicle underframe having spaced longitudinal sills and ahorizontal web connecting said sills and forming a tank bot-tom memberand includingv as an integral part thereof a reservoir for fluid storedsepa; rately from the contents of the tank.

5. In a railway vehicle underframe forming the bottom of a vehicle tank,a sill member, and a separate reservoir having a wall merging with saidsill member.

6. In a railway vehicle underframe, a longitudinal sill, a substantiallyhorizontal web extending laterally from said sill and forming a tankbottom member, and a fluid chamher, said sill and web being integralwith each other and having portions forming parts of the wall of saidchamber.

7. A railway tank vehicle underframe comprising center sill structureand a substantially horizontal web forming the bottom of the vehicletank, and separate reservoirs located on opposite sides of said sillstructure above said web and integral with said web and sill structure.

8. A railway tank vehicle underframe comprising center sill structureand a substantially horizontal web forming the bottom of the same inproper con- Leeases the vehicle tank, and separate reservoirs located onopposite sides of said sill structure above said web and integral withsaid web and sill structure, portions of said web and sills formingparts of the walls of said reservoirs.

9. In a railway vehicle tank underframe, a substantially horizontal webforming the tank bottom, an upstanding sill integral therewith, and areservoir above said web having a wall merging with and formed in partby said sill and web.

10. In a railway vehicle underframe, a pluralityof reservoirs disposedside by side and extending longitudinally of the underframe with theiradjacent walls merging with each other and constituting sill-likemembers of the underframe.

11. In a railway vehicle underframe, a bolster structure, and reservoirmembers disposed longitudinally of the underframe, one on each side ofsaid bolster, with their ends formed by the bolster structure.

12. In a railway vehicle underframe, a bolster structure comprisingspaced side walls, reservoirs extending longitudinally of theunderframe, one on each side of said bolster structure, with an end wallof each reservoir formed by a respective side wall of the bolsterstructure.

13. In a railway tank vehicle underframe, a horizontal web forming thebottom of the tank, a reservoir integral with said web and extendingupwardly therefrom, and a brake cylinder integral with said web andextending downwardly therefrom.

14. In a railway tank vehicle underframe, a horizontal web forming thebottom of the tank, a reservoir integral with said web and extendingupwardly therefrom, and a brake cylinder integral with said web andextending downwardly therefrom, portions of said web forming a part ofthe wall of said reservoir and of the wall of said cylinder.

15. A railway vehicle underframe having a portion forming part of thewall of a vehicle tank and also forming a part of the wall of a fluidchamber or reservoir separate from the vehicle tank.

In testimony whereof I hereunto aflix my signature this 23rd day ofJune, 1930.

EDWIN C. JACKSON.

